Package georegression.struct.curve

Class EllipseRotated_F64

java.lang.Object

georegression.struct.curve.EllipseRotated_F64

All Implemented Interfaces:

Serializable

public class EllipseRotated_F64
extends Object
implements Serializable

An ellipse described using its center, semi-axes, and orientation.
(x'*cos(phi) + y'*sin(phi))^2/a^2 + (-x'*sin(phi) + y'*cos(phi))^2/b_2 = 1
x' = x-x_0, y' = y-y_0
where (x_0,y_0) is the center, (a,b) are major and minor axises, and phi is it's orientation.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
double	a	semi major-axis
double	b	semi minor-axis
Point2D_F64	center	Center of the ellipse
double	phi	counter clockwise angle of rotation from x-axis to the major axis.

Constructor Summary

Constructors

Constructor	Description
EllipseRotated_F64()
EllipseRotated_F64(double x0, double y0, double a, double b, double phi)	Constructor
EllipseRotated_F64(EllipseRotated_F64 original)	Copy constructor
EllipseRotated_F64(Point2D_F64 center, double a, double b, double phi)	Constructor

Method Summary

Modifier and Type	Method	Description
Point2D_F64	getCenter()
void	setCenter(Point2D_F64 center)
EllipseRotated_F64	setTo(double x0, double y0, double a, double b, double phi)
EllipseRotated_F64	setTo(EllipseRotated_F64 ellipse)
String	toString()
void	zero()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

center

public Point2D_F64 center

Center of the ellipse

a

public double a

semi major-axis

b

public double b

semi minor-axis

phi

public double phi

counter clockwise angle of rotation from x-axis to the major axis. Standard range is from -PI/2 to PI/2

Constructor Details

EllipseRotated_F64

public EllipseRotated_F64(Point2D_F64 center,
 double a,
 double b,
 double phi)

Constructor

Parameters:

center - Ellipse center

a - major axis

b - minor axis

phi - orientation in radians

EllipseRotated_F64

public EllipseRotated_F64(double x0,
 double y0,
 double a,
 double b,
 double phi)

Constructor

Parameters:

x0 - x coordinate of center

y0 - y coordinate of center

a - major axis

b - minor axis

phi - orientation in radians

EllipseRotated_F64

public EllipseRotated_F64(EllipseRotated_F64 original)

Copy constructor

Parameters:

original - Ellipse which is to be copied

EllipseRotated_F64

public EllipseRotated_F64()

Method Details

zero

public void zero()

getCenter

public Point2D_F64 getCenter()

setCenter

public void setCenter(Point2D_F64 center)

setTo

public EllipseRotated_F64 setTo(double x0,
 double y0,
 double a,
 double b,
 double phi)

setTo

public EllipseRotated_F64 setTo(EllipseRotated_F64 ellipse)

toString

public String toString()

Overrides:

toString in class Object